EARN UP TO 5,000 UNITED MILES WITH HILTON
Register then stay at Hilton and you can get up to 5,000 United miles. Valid April 4 through June 30, 2013.
I haven't seen many airline bonuses with hotels so this is pretty good. 25k miles gets you a domestic flight which could be worth up to around $400-700 (I once booked a flight from nyc to aspen for 25k miles which costed approx $700). So if you can max this promotion out, I will say this 5k miles are worth $100 to $140.
You will earn 1,000 United miles per qualifying stay of 2+ nights, max of 5 stays for 5,000. To max this out, you would have to stay a minimum of 10 nights (5 stays x 2 nights each)
HOW TO SIGN UP
1) Click here to sign up
2) Select United as your preferred Double Dip Points & Miles in your HHonors account profile
3) Select Points and Variable Miles or Points and Fixed Miles as your Double Dip Earning Style in your profile (not Points and Points)
4) Complete a 2-night stay at any hotel from April 4 and June 30, 2013